Control system for an electronically commutated motor
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United States of America Patent
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Jan 13, 1987
Issued Date -
N/A
app pub date -
Mar 12, 1985
filing date -
Apr 19, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Control system for an electronically commutated motor (ECM). The ECM includes a stationary assembly having a plurality of winding stages adapted to be selectively commutated, and rotatable means associated with the stationary assembly in selective magnetic coupling relation with the winding stages. A digital computer operating under stored program control effects the commutation of the winding stages by selectively supplying power thereto in response to a pattern of control signals leaving at least one of the winding stages unpowered at any one time while the other winding stages are powered.
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